One person was killed in a multi-vehicle crash overnight on Highway 118 near Somis.

The accident was reported around 12:20 a.m. on the state route, also called Los Angeles Avenue, between Aggen and Bradley roads, according to the California Highway Patrol.

The crash site was about two miles west of the intersection of Highway 118 and State Route 34. The area is generally near the unincorporated town of Somis, located north of Camarillo.

One fatality was reported by firefighters about three minutes after they arrived on scene, according to the Ventura County Fire Department. The person who died at the scene was trapped in the vehicle and required extrication, fire officials said.

The CHP said two vehicles had crashed head on. Fire officials said Sunday three vehicles may have been involved. One of the vehicles had overturned.

The incident blocked both directions of Highway 118 for a time.

By Sunday afternoon, a memorial had been set up on the south side of the 118 near Aggen Road. Red and white roses and an array of memorial candles hugged the base of a telephone pole. Cans and bottles of Modelo beer were interspersed with the flowers and candles.

Some drivers in the area reported foggy conditions late Saturday night, and the National Weather Service had issued a dense fog advisory for Ventura County's coastal plain around 1:15 a.m. Sunday. It was not immediately clear Sunday whether foggy conditions were a factor in the crash.